| Piazza Triangle Co Ltd | Extraterritorial | 2010 |
| PIC Advisory Ltd | Professional & scientific | 2020 |
| PIC Home Ltd | Real estate | 2024 |
| Picadilly Properties Ltd | Real estate | 2021 |
| Picasso Express (Bexhill) Ltd | Hospitality | 2015 |
| Picasso Express (Eastbourne) Ltd | Hospitality | 2022 |
| Picasso's Restaurant Limited | Hospitality | 2003 |
| Pick ME UP Paella Limited | Extraterritorial | 2009 |
| Picross Engineering Limited | Manufacturing | 2021 |
| Piernine Limited | Information & communication | 2019 |
| Pierworks AI Ltd | Professional & scientific | 2026 |
| Pieter Gouws Ophthalmologist Limited | Health & social care | 2018 |
| Pimasi Ltd | Information & communication | 2022 |
| Pinecoral Limited | Households | 1979 |
| Pinehurst House RTM Company Limited | Real estate | 2006 |
| Pineriver Healthcare Limited | Financial services | 2017 |
| Pinfold & Partners Ltd | Other services | 2016 |
| Pingding Limited | Construction | 2013 |
| Pink Belt Productions Ltd | Information & communication | 2024 |
| Pink Creative Retail Ltd | Professional & scientific | 2024 |
| Pink Namaste Ltd | Education | 2024 |
| Pinner Parade Ltd | Real estate | 2011 |
| Pintell Ltd | Education | 2017 |
| Pioneer HR and Training Consultancy Limited | Professional & scientific | 2013 |
| Pioneer Whlc International Limited | Health & social care | 2024 |
| Pioneer Wound Healing & Lymphoedema Care Limited | Health & social care | 2020 |
| Pioneer Wound Healing & Lymphoedema Centres Limited | Health & social care | 2013 |
| Pioneer Wound Healing & Lymphoedema Centres NO.2 Limited | Health & social care | 2021 |
| Pioneer Wound Healing Centres CIC | Health & social care | 2011 |
| Pipers News Stores Limited | Wholesale & retail | 1990 |
| Pisces Digital Ltd | Professional & scientific | 2020 |
| Pitch and Putt Ltd | Arts & recreation | 2021 |
| Pitpuk Ltd | Hospitality | 2020 |
| Pivotsystems Ltd | Information & communication | 2025 |
| Pixel Wear Limited | Wholesale & retail | 2025 |
| Pixie Cottage Ltd | Hospitality | 2019 |
| Pixie Magic Holidays Ltd | Administrative & support | 2022 |
| Pixiepast Ltd | Wholesale & retail | 2024 |
| Pizza Fratellie Limited | Hospitality | 2026 |
| Pizza Stop (UK) Limited | Hospitality | 2002 |
| Pizzazito Limited | Hospitality | 2026 |
| PJ Eastbourne Limited | Hospitality | 2016 |
| PJ Leadership Consulting Ltd | Professional & scientific | 2022 |
| PJ Recycling Solutions Ltd | Wholesale & retail | 2020 |
| PJB Consult Ltd | Professional & scientific | 2020 |
| PJB Training Limited | Other services | 2014 |
| PJC Consultancy Services Ltd | Administrative & support | 2019 |
| PJE Systems Ltd | Construction | 2009 |
| PJF Consulting Ltd | Professional & scientific | 2003 |
| PJL Construction Services Limited | Construction | 2015 |
| PJM Consulting Limited | Professional & scientific | 2025 |
| Pjnj Consultancy Limited | Education | 2014 |
| PK Business Ltd | Administrative & support | 2026 |
| Placeholder Studios Ltd | Professional & scientific | 2024 |
| Places for Children Limited | Other services | 2001 |
| Plain Sailing (International) Limited | Information & communication | 1998 |
| Plain Sailing Communications Limited | Information & communication | 2001 |
| Plan B Restorations Ltd | Other services | 2017 |
| Planetesimal Ltd | Real estate | 2020 |
| Planetoid Holdings Ltd | Real estate | 2012 |
| Planning Development Services Limited | Professional & scientific | 2007 |
| Plant Handling Services Limited | Construction | 2001 |
| Plant Handling Solutions Ltd | Administrative & support | 2021 |
| Plantaphile Limited | Professional & scientific | 2007 |
| Plasa Events Ltd | Administrative & support | 2006 |
| Plasa Media Limited | Information & communication | 2000 |
| Plastic Free Eastbourne Community Interest Company | Administrative & support | 2018 |
| Platform Coffee Shop Barnham Ltd | Wholesale & retail | 2022 |
| Platform Coffee Shop Ltd | Hospitality | 2021 |
| Platinum Elite Services Ltd | Construction | 2018 |
| Platinum Podiatry Ltd | Health & social care | 2010 |
| Playskape Games Limited | Wholesale & retail | 2023 |
| PLB Mortgages Limited | Financial services | 2025 |
| Plexhill Limited | Administrative & support | 2011 |
| PLS Properties Limited | Real estate | 2016 |
| Plumbers Mate Limited | Wholesale & retail | 1999 |
| Plumbersoncall Ltd | Construction | 2024 |
| Plumbing Electrical and Drainage 24/7 Services Ltd | Construction | 2024 |
| Plumbwells Plumbing Limited | Construction | 2008 |
| Plummer Parsons Limited | Administrative & support | 2009 |
| Pluto South East Limited | Real estate | 2017 |
| PMA Scaffolding Ltd | Construction | 2017 |
| POC Ltd | Health & social care | 2025 |
| Poco Wine Ltd | Hospitality | 2024 |
| Polegate Hearing Care Limited | Wholesale & retail | 2021 |
| Polegate Holdings Limited | Financial services | 2025 |
| Polegate One Limited | Real estate | 2022 |
| Polegate Secure Storage Ltd | Administrative & support | 2021 |
| Polish Delicatessen Eastbourne Ltd | Wholesale & retail | 2012 |
| Polish School Eastbourne Ltd | Education | 2014 |
| Polished Concrete Plus Ltd | Construction | 2016 |
| Polpo Studio Limited | Professional & scientific | 2025 |
| Pomfret Butchers Limited | Wholesale & retail | 2003 |
| Pond Willow Residents Limited | Households | 2025 |
| Pooh's Nursery School Ltd | Health & social care | 2013 |
| Pop's Kitchen Ltd | Hospitality | 2016 |
| Popbangfizz Limited | Other services | 2014 |
| Poplar Close Management Limited | Households | 2019 |
| Poppy Road Investments Ltd | Real estate | 2022 |
| Porox Finishings Ltd | Construction | 2019 |